Endoscope system

Abstract

The utility model provides an endoscope system which comprises an endoscope and a processor which are in communication connection, and the endoscope is provided with a real signal source, an analog signal source, a source end signal power detection unit, a signal transmission cable and a test cable; wherein the real signal source is used for generating a signal to be transmitted, and the real signal source is connected to the processor through a signal transmission cable; the analog signal source is used for generating a test signal; the source end signal power detection unit is connected with the analog signal source and the processor and used for detecting an original power value of a test signal output by the analog signal source and feeding back the original power value to the processor, and the analog signal source is connected to the processor through a test cable so that the processor can obtain a terminal power value; and the processor determines the real-time line loss of the test cable according to the original power value and the terminal power value, so that the real-time line loss of the signal transmission cable is represented and used for compensation. According to the method and the device, the current line loss can be determined in real time in a data acquisition process by applying the endoscope so as to carry out real-time line loss compensation.

Description

Technical Field

[0001] The present application relates to the technical field of endoscopes, and in particular to an endoscope system. Background Art

[0002] As medical endoscopes demand increasingly sophisticated image quality, the data rate from image sensors (such as cameras) to the host computer is increasing, often exceeding 2.5G bps (bits per second). At the same time, cables are relatively long, reaching approximately 4 meters. Due to the high transmission signal rate and long cables, significant line loss occurs during transmission, resulting in signal loss and poor image quality.

[0003] To ensure complete signal transmission, it is necessary to determine the signal attenuation (i.e., line loss) along the link and compensate for the line loss to ensure image quality. However, current line loss measurement solutions often cannot achieve real-time and accurate measurement.

[0004] In summary, how to effectively solve the problem of line loss measurement and compensation and achieve high-quality transmission of endoscopic images is a technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0005] The purpose of this application is to provide an endoscope system that can determine the current line loss in real time during the process of data acquisition using an endoscope so as to perform real-time line loss compensation.

[0006] To solve the above technical problems, this application provides the following technical solutions:

[0007] An endoscope system includes an endoscope and a processor connected in communication, wherein the endoscope is provided with a real signal source, a simulation signal source, a source end signal power detection unit, a signal transmission cable and a test cable; wherein,

[0008] The real signal source is used to generate a signal to be transmitted, and the real signal source is connected to the processor via the signal transmission cable;

[0009] The analog signal source is used to generate a test signal; the analog signal source is arranged adjacent to the real signal source and is connected to the processor via the test cable so that the processor obtains the terminal power value of the test signal; the test cable and the signal transmission cable have the same specification parameters;

[0010] The source-end signal power detection unit is connected to the analog signal source and the processor respectively, and is used to detect the original power value of the test signal output by the analog signal source and feed the original power value back to the processor.

[0011] Preferably, the analog signal source is further connected to the processor via a control cable.

[0012] Preferably, the output frequency of the test signal is x / 2 Hz, wherein x is the transmission rate of the signal transmission cable.

[0013] Preferably, the test cable and the signal transmission cable are arranged side by side and are located in the same integrated cable.

[0014] Preferably, the analog signal source is used to generate two test signals with the same power. The analog signal source includes a first signal output end and a second signal output end. The first signal output end is connected to the source-end signal power detection unit, and the second signal output end is connected to the processor through the test cable. The two test signals with the same power are output from the first signal output end and the second signal output end respectively.

[0015] Preferably, the analog signal source includes a clock source and a phase-locked loop.

[0016] Preferably, the processor includes a terminal signal power detection unit, a real signal receiving unit and a main control unit; wherein,

[0017] The terminal signal power detection unit is connected to the test cable, and is used to receive the test signal output by the test cable and detect the terminal power value of the test signal;

[0018] The real signal receiving unit is connected to the signal transmission cable and is used to receive the signal output by the signal transmission cable;

[0019] The main control unit is respectively connected to the source signal power detection unit, the terminal signal power detection unit and the real signal receiving unit, and is used to determine the line loss value of the test cable according to the original power value and the terminal power value, and perform power compensation on the signal transmitted through the signal transmission cable based on the line loss value to obtain a compensated signal.

[0020] Preferably, the source-end signal power detection unit and the terminal-end signal power detection unit include the same power detection circuit and / or power detection chip.

[0021] Preferably, the signal to be transmitted includes an image signal, the endoscope system further includes a display device, and the main control unit is connected to the display device;

[0022] The display device is used to display the image generated by the main control unit based on the compensation signal.

[0023] Preferably, the real signal source includes an image sensor and / or an ultrasound probe.

[0024] The endoscope system provided in an embodiment of the present application includes an endoscope and a processor connected in communication, the endoscope being provided with a real signal source, an analog signal source, a source-end signal power detection unit, a signal transmission cable and a test cable; wherein the real signal source is used to generate a signal to be transmitted, and the real signal source is connected to the processor via the signal transmission cable; the analog signal source is used to generate a test signal; the analog signal source is arranged adjacent to the real signal source and is connected to the processor via the test cable, so that the processor obtains the terminal power value of the test signal; the test cable has the same specification parameters as the signal transmission cable; the source-end signal power detection unit is connected to the analog signal source and the processor, respectively, for detecting the original power value of the test signal output by the analog signal source and feeding back the original power value to the processor.

[0025] The endoscope of this endoscope system is not only provided with a real signal source and a signal transmission cable, but also with an analog signal source, a source-end signal power detection unit, and a test cable. It should be noted that the real signal source still generates the signal to be transmitted normally and transmits the signal to be transmitted to the processor through the signal transmission cable; the analog signal source generates a test signal, and then the test signal is transmitted to the processor through a test cable with the same specifications and parameters as the signal transmission cable. Since the specifications and parameters of the signal transmission cable and the test cable are the same, the starting points are similar, and the end points coincide, the line loss of the signal transmission cable can be determined by performing a line loss test based on the test cable. Specifically, in order to measure the line loss of the test cable, the source-end signal power detection unit is connected to the analog signal source and the processor respectively, and is used to detect the original power value of the test signal output by the analog signal source and feed the original power value back to the processor; the analog signal source is used to generate the test signal; the analog signal source is connected to the processor through the test cable so that the processor obtains the terminal power value. In this way, the processor can determine the test cable's line loss based on the original power value and the terminal power value. This line loss can also be regarded as the line loss of the signal transmission cable. The processor can further use this line loss to perform real-time line loss compensation on the signal transmitted through the signal transmission cable. This configuration can achieve the effect of real-time line loss measurement and compensation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is a schematic diagram of an endoscope system according to an embodiment of the present application;

[0028] Figure 2 This is a schematic diagram of a test signal transmission of an endoscope in an embodiment of the present application;

[0029] Figure 3 A schematic diagram of another endoscope system according to an embodiment of the present application;

[0030] Figure 4 Schematic diagram of signal transmission of another endoscope system in an embodiment of the present application. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. Obviously, the embodiments described are only a part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making any creative efforts are within the scope of protection of the present application.

[0032] Please refer to Figure 1 , Figure 1 Schematic diagram of an endoscope system according to an embodiment of the present application, including an endoscope 100 and a processor 200 in communication connection, wherein the endoscope is provided with a real signal source 101, a simulation signal source 102, a source-end signal power detection unit 103, a signal transmission cable 104, and a test cable 105; wherein,

[0033] The real signal source 101 is used to generate a signal to be transmitted. The real signal source 101 is connected to the processor 200 via the signal transmission cable 104 so as to transmit the signal to be transmitted to the processor 200.

[0034] The analog signal source 102 is used to generate a test signal; the analog signal source 102 is arranged adjacent to the real signal source 101 and is connected to the processor 200 through the test cable 105; the test cable 105 has the same specifications as the signal transmission cable 104;

[0035] The source-end signal power detection unit 103 is connected to the analog signal source 102 and the processor 200 , respectively, and is configured to detect an original power value of the test signal output by the analog signal source 102 and feed the original power value back to the processor 200 .

[0036] The real signal source 101 may also be referred to as a signal generating unit, the source-end signal power detection unit 103 may also be referred to as a source-end signal power detection component, and the processor 200 may specifically be a CPU control and computing unit. In other words, the units in this embodiment may also be referred to as components, as long as they have the corresponding signal generation, transmission, or processing functions, and their specific internal structure and form are not limited.

[0037] In one embodiment of the present application, the real signal source 101 includes an image sensor and / or an ultrasound probe. In other words, the real signal source 101 can be either an image sensor or an ultrasound probe. Of course, the specific number of image sensors or ultrasound probes in the real signal source 101 can be determined based on actual needs and is not limited here. The signal to be transmitted generated by the real signal source 101 can be, for example, a video signal, an image signal, an ultrasound signal, or the like.

[0038] Generally, endoscopes 100 are classified as rigid endoscopes 100 and flexible endoscopes 100. For flexible endoscopes 100, a real signal source 101, such as an ultrasound probe or image sensor, is mounted on the rigid front end of the insertion portion; for rigid endoscopes, a real signal source 101, such as an image sensor, is mounted on the operating handle. In other words, the real signal source 101 in the endoscope 100 of the present application can be located in different specific locations depending on the nature of the endoscope 100.

[0039] In the endoscope system 100 provided in the embodiment of the present application, the test cable 105 and the signal transmission cable 104 have the same specifications. It should be noted that the so-called identical specifications include the cable model (i.e., diameter and core material), cable length, and other parameters. This ensures that the test cable 105 and the signal transmission cable 104 have approximately the same line loss characteristics. Furthermore, the simulated signal source 102 and the real signal source 101 are positioned adjacent to each other, allowing the input side of the test cable 105 and the input side of the signal transmission cable 104 to be located at approximately the same position. Furthermore, since both the test cable 105 and the signal transmission cable 104 are connected to the processor 200, the output side of the test cable 105 and the output side of the signal transmission cable 104 are also located at approximately the same position. This ensures that the test cable 105 and the signal transmission cable 104 have approximately the same layout, facilitating their placement in the same environment and minimizing differences in line loss caused by environmental factors (e.g., temperature).

[0040] As can be seen from the above, in the endoscope 100 system provided in the embodiment of the present application, the test cable 105 and the signal transmission cable 104 have the same specification parameters and are in roughly the same environment. Therefore, it can be considered that the test cable 105 and the signal transmission cable 104 have roughly the same line loss. Furthermore, the power lost when the signal to be transmitted is transmitted from the real signal source 101 to the processor 200 can be compensated based on the line loss of the test cable 105 measured in real time.

[0041] Generally, the output line loss can be determined by measuring the power loss. Therefore, the processor 200 can determine the real-time line loss of the test cable 105 based on the original power value and the terminal power value of the test signal, and then determine the real-time line loss of the signal transmission cable 104.

[0042] Specifically, after analog signal source 102 generates a test signal, source-end signal power detection unit 103 at the source end directly detects the power of the test signal output by analog signal source 102 to obtain the original power value of the test signal. Processor 200 at the terminal end detects the test signal output from the output end of test cable 105 to obtain the terminal power value of the test signal. The source end refers to the input end of test cable 105, and the terminal end refers to the output end of test cable 105.

[0043] Furthermore, the source-end signal power detection unit 103 is also connected to the processor 200 and outputs the original power value to the processor 200. Therefore, in actual applications, the processor 200 can first calculate the terminal power value of the received test signal, then calculate the difference between the original power value and the terminal power value, and determine the difference as the real-time line loss.

[0044] For example, when the detected original power value is PIN and the terminal power value is POUT, the real-time line loss IL = PIN - POUT.

[0045] In a specific embodiment of the present application, the analog signal source 102 is used to generate two test signals with the same power. The analog signal source 102 includes a first signal output end and a second signal output end. The first signal output end is connected to the source-end signal power detection unit 103, and the second signal output end is connected to the processor 200 through the test cable 105. The two test signals with the same power are output from the first signal output end and the second signal output end respectively.

[0046] Please refer to Figure 2That is, the analog signal source 102 outputs two test signals with the same signal power. One test signal is directly output from the first signal output terminal 1 to the source-end signal power detection unit 103, and the other test signal is output from the second signal output terminal 2 to the processor 200. In other words, the analog signal source 102 can directly output two test signals. One test signal is directly input to the source-end signal power detection unit 103 for power detection to obtain the original power value, and the other test signal is transmitted through the test cable 105 and finally output to the processor 200 for power detection to obtain the terminal power value. In order to measure the power value of the test signal at the output end of the analog signal source 102 as much as possible, the signal transmission distance between the source-end signal power detection unit 103 and the analog signal source 102 should be as short as possible. Then, the signal power of the two signals is the same, and the two signals output by the analog signal source 102 can be collected by the source-end signal power detection unit 103 and the processor 200 in real time, respectively, to obtain more accurate original power values ​​and terminal power values.

[0047] It should be noted that to detect signal power, not only the voltage but also the current must be tested. Testing the current requires connecting the test components in series to the circuit structure to be tested. However, the signal transmission cable 104 that transmits the signal to be transmitted does not contain these electrical components for testing the current. These electrical components will inevitably introduce additional line loss, which will make the transmission structure of the test signal and the signal to be tested different, making it impossible to approximately determine the line loss of the test cable 105.

[0048] In this embodiment, since the signal power of the two signals is the same, the power of the test signal that is not input into test cable 105 is detected. The resulting raw power value can be used as an approximate power value at the input end of test cable 105. The power of the other signal output from test cable 105 is detected, and the resulting terminal power value is the power value at the output end of test cable 105. In this way, the power values ​​at the input and output ends of test cable 105 can be obtained without destroying the similarity between the transmission paths of the test signal and the signal to be transmitted, thereby determining the real-time line loss of test cable 105.

[0049] In a specific embodiment of the present application, the analog signal source 102 generates and outputs a test signal with a frequency of x / 2 Hz, where x is the transmission rate of the signal transmission cable 104 .

[0050] Considering that line loss may vary at different transmission rates, to more accurately measure the real-time line loss of the signal transmission cable 104, the frequency of the test signal output by the analog signal source 102 can be configured according to the transmission rate of the signal transmission cable 104. For example, if the high-speed signal operates at a rate of x bps, the analog signal source 102 can be configured to output a test signal at a frequency of x / 2 Hz.

[0051] In one specific embodiment of the present application, in order to ensure that the test cable 105 and the signal transmission cable 104 maintain consistent environments, in the endoscope system 100, the test cable 105 and the signal transmission cable 104 are arranged side by side and located in the same integrated cable. That is, the test cable 105 and the signal transmission cable 104 can be wrapped together. In this way, the test cable 105 and the signal transmission cable 104 can be kept in the same environment, thereby avoiding differential line loss in different environments and making the measured real-time line loss more consistent with the actual situation of the signal transmission cable 104. The integrated cable can specifically include various signal cables required for communication in the endoscope system 100.

[0052] In a specific embodiment of the present application, the analog signal source 102 includes a clock source and a phase-locked loop, wherein the clock source generates an original signal, and the phase-locked loop can adjust the original signal according to actual needs, thereby outputting the actual required test signal.

[0053] In a specific implementation of the present application, the analog signal source 102 is further connected to the processor 200 via a control cable.

[0054] That is, the analog signal source 102 is connected to the processor 200, and the analog signal source 102 can output a test signal under the control of the processor 200. Specifically, the processor 200 can control the analog signal source 102 to generate a test signal corresponding to the signal to be transmitted. For example, different models of endoscopes 100 have different cable transmission rates. As mentioned above, at different signal transmission rates, even if the same signal transmission cable 104 is used, different line losses may be generated. Therefore, in order to ensure that the line loss of the test cable 105 is consistent with the line loss of the signal transmission cable 104, the signal transmission rate of the signal transmission cable 104 of each model of endoscope 100 can be actually tested and the data saved before leaving the factory. When a certain endoscope 100 is used, the processor 200 reads the model information of the endoscope 100 and configures the frequency of the test signal output by the analog signal source 102 according to the model information.

[0055] In addition, the processor 200 may also control the analog signal source 102 to generate a test signal according to a preset period to perform line loss detection and compensation.

[0056] It can be seen that in this embodiment, by establishing a communication connection relationship between the analog signal source 102 and the processor 200, the characteristics of the test signal output by the analog signal source 102 and the time of outputting the test signal can be flexibly adjusted, which has better compatibility.

[0057] The endoscope 100 system provided in an embodiment of the present application includes an endoscope 100 and a processor 200 that are communicatively connected, and the endoscope 100 is provided with a real signal source 101, an analog signal source 102, a source-end signal power detection unit 103, a signal transmission cable 104 and a test cable 105; wherein, the real signal source 101 is used to generate a signal to be transmitted, and the real signal source 101 is connected to the processor 200 through the signal transmission cable 104; the analog signal source 102 is used to generate a test signal; the analog signal source 102 is arranged adjacent to the real signal source 101 and is connected to the processor 200 through the test cable 105, so that the processor 200 obtains the terminal power value of the test signal; the test cable 105 has the same specification parameters as the signal transmission cable 104; the source-end signal power detection unit 103 is connected to the analog signal source 102 and the processor 200 respectively, and is used to detect the original power value of the test signal output by the analog signal source 102 and feed back the original power value to the processor 200.

[0058] The endoscope 100 of the endoscope 100 system is provided with not only a real signal source 101 and a signal transmission cable 104, but also a simulated signal source 102, a source-end signal power detection unit 103, and a test cable 105. It should be noted that the real signal source 101 still normally generates the signal to be transmitted and transmits the signal to be transmitted to the processor 200 via the signal transmission cable 104; the simulated signal source 102 generates a test signal, which is then transmitted to the processor 200 via the test cable 105 having the same specifications and parameters as the signal transmission cable 104. Since the specifications and parameters of the signal transmission cable 104 and the test cable 105 are the same, the starting points are similar, and the end points coincide, the line loss of the signal transmission cable 104 can be determined by performing a line loss test based on the test cable 105. Specifically, to measure the line loss of the test cable 105, the source-end signal power detection unit 103 is connected to the analog signal source 102 and the processor 200, respectively, to detect the original power value of the test signal output by the analog signal source 102 and feed the original power value back to the processor 200. The analog signal source 102 is used to generate the test signal. The analog signal source 102 is connected to the processor 200 via the test cable 105, so that the processor 200 can obtain the terminal power value. In this way, the processor 200 can determine the line loss of the test cable 105 based on the original power value and the terminal power value. This line loss can also be regarded as the line loss of the signal transmission cable 104. Further, the processor 200 can perform real-time line loss compensation on the signal transmitted through the signal transmission cable 104 based on this line loss. This configuration achieves the effect of measuring and compensating line loss in real time.

[0059] It should be noted that measuring line loss using the endoscope 100 system is essentially measuring line loss on the test cable 105, and the measurement result is equivalent to that of the signal transmission cable 104. Therefore, in practical applications, while the signal transmission cable 104 is transmitting a video signal, the real-time line loss of the signal transmission cable 104 can be determined by measuring line loss on the test cable 105 in real time. Further, signal compensation can be performed on the real-time transmitted video signal based on the real-time line loss, thereby ensuring image quality and effectively addressing line loss differences caused by sudden changes in ambient temperature.

[0060] Please refer to Figure 3 In one embodiment of the present application, line loss compensation is performed based on the line loss value, which can be implemented in software or based on a hardware structure.

[0061] The software is used to implement the data received on the signal transmission line, and the processor 200 can perform local amplification and other processing on the data content, thereby completing line loss compensation. Specifically, the processor 200 includes a terminal signal power detection unit 202, a real signal receiving unit 203 and a main control unit 201;

[0062] The terminal signal power detection unit 202 is connected to the test cable 105 and is used to receive the test signal output by the test cable 105 and detect the terminal power value of the test signal;

[0063] The real signal receiving unit 203 is connected to the signal transmission cable 104 and is used to receive the signal output by the signal transmission cable 104;

[0064] The main control unit 201 is connected to the source signal power detection unit 103, the terminal signal power detection unit 202 and the real signal receiving unit 203 respectively, and is used to determine the line loss value of the test cable 105 according to the original power value and the terminal power value, and perform power compensation on the signal transmitted through the signal transmission cable 104 based on the line loss value to obtain a compensated signal.

[0065] As can be seen from the above, the processor 200 can determine the line loss value based on the original power value and the terminal power value. Specifically, the processor 200 can include a terminal signal power detection unit 202, a real signal receiving unit 203 and a main control unit 201. The real signal receiving unit 203 is connected to the signal transmission cable 104 and can receive the signal output by the signal transmission cable 104. The main control unit 201 is respectively connected to the source signal power detection unit 103, the terminal signal power detection unit 202 and the real signal receiving unit 203, and can determine the line loss value based on the original power value and the terminal power value. Then, based on the line loss value, the main control unit 201 can further perform line loss compensation on the signal received by the real signal receiving unit 203, thereby obtaining a compensated signal.

[0066] Line loss compensation is implemented based on hardware, that is, when the signal is compensated in the processor 200, it can also be specifically achieved by Figure 4 The signal compensation circuit 204 (signal compensation unit) shown in FIG. performs signal compensation. Specifically, the signal compensation circuit 204 is configured to perform real-time compensation processing on the signal received by the processor 200 from the signal transmission cable 104 based on a real-time compensation value. The signal compensation circuit 204 specifically includes hardware circuits and chips with pre-emphasis and equalization.

[0067] In a specific embodiment of the present application, the source signal power detection unit 103 and the terminal signal power detection unit 202 include the same power detection circuit and / or power detection chip. The source signal power detection unit 103 and the terminal signal power detection unit 202 can be packaged devices, which may only have a power detection circuit or a circuit structure containing a power detection chip. In this embodiment, the shape and size after packaging may be different, but the circuit or chip used to detect power inside must be the same. For example, the source signal power detection unit 103 and the terminal signal power detection unit 202 each have the same power detection circuit. When the source signal power detection unit 103 and the terminal signal power detection unit 202 have the same power detection circuit, the difference in power detection caused by different power detection circuits can be avoided as much as possible, thereby avoiding the introduction of new deviations. Among them, the power detection circuit mainly includes a diode and a detection-related chip circuit. The specific structure of the power detection circuit can refer to the power detection principle and related implementation, and will not be described in detail here.

[0068] In one embodiment of the present application, the endoscope system 100 further includes a display device, and the main control unit 201 is connected to the display device;

[0069] The display device is used to display the image generated by the main control unit 201 based on the compensation signal.

[0070] That is, by determining the line loss value and performing line loss compensation, the image captured by the endoscope 100 can be displayed on the display device, thereby achieving image display without transmission line loss.

[0071] It should be noted that the method of measuring the actual line loss and compensating the signal in the endoscope 100 system is a solution commonly used by those skilled in the art. Figure 4 The process of performing line loss measurement and signal compensation on the endoscope 100 can refer to the following process:

[0072] Step 1: During the operation of the endoscope 100 system, the processor 200 configures the analog signal source 102 to generate the corresponding frequency according to the system requirements. For example, if the high-speed signal rate is x bps, the frequency of the test signal output by the analog signal source 102 can be configured to be x / 2 Hz.

[0073] Step 2: Input the test signal generated by the analog signal source 102 into the source-end signal power detection unit 103 to detect the power of the test signal at the source end, obtain the power PIN, and transmit the PIN to the processor 200.

[0074] Step 3: Input the test signal input through the test cable 105 into the terminal signal power detection unit 202 integrated in the processor 200, detect the power of the test signal when transmitted to the terminal, and transmit the detected power POUT to the main control unit 201.

[0075] Step 4: The main control unit 201 calculates the link loss IL=PIN−POUT based on POUT and PIN, that is, obtains the line loss of the test cable 105 .

[0076] Step 5: The main control unit 201 can configure the signal compensation unit according to the IL value to allow the entire video transmission link to obtain reasonable compensation.

[0077] Step 6: Ensure that the device can update the compensation value in time with temperature changes, and repeat steps 1 to 5 every 30 seconds.

[0078] The above description of the disclosed embodiments will enable those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein, but is to be construed in the widest possible manner consistent with the principles and novel features disclosed herein.

Claims

1. An endoscope system comprising an endoscope and a processor connected in communication, characterized in that: The endoscope is provided with a real signal source, a simulation signal source, a source end signal power detection unit, a signal transmission cable and a test cable; wherein, The real signal source is used to generate a signal to be transmitted, and the real signal source is connected to the processor via the signal transmission cable; The analog signal source is used to generate a test signal; the analog signal source is arranged adjacent to the real signal source and is connected to the processor through the test cable, so that the processor obtains the terminal power value of the test signal; the test cable and the signal transmission cable have the same specification parameters; The source-end signal power detection unit is connected to the analog signal source and the processor respectively, and is used to detect the original power value of the test signal output by the analog signal source and feed the original power value back to the processor.

2. The endoscope system according to claim 1, wherein: The analog signal source is also connected to the processor via a control cable.

3. The endoscope system according to claim 1, wherein: The output frequency of the test signal is x / 2 Hz, where x is the transmission rate of the signal transmission cable.

4. The endoscope system according to claim 1, wherein: The test cable and the signal transmission cable are arranged side by side and are located in the same integrated cable.

5. The endoscope system according to claim 1, wherein: The analog signal source is used to generate two test signals with the same power. The analog signal source includes a first signal output end and a second signal output end. The first signal output end is connected to the source-end signal power detection unit, and the second signal output end is connected to the processor through the test cable. The two test signals with the same power are output from the first signal output end and the second signal output end respectively.

6. The endoscope system according to claim 1, wherein: The analog signal source includes a clock source and a phase-locked loop.

7. The endoscope system according to claim 1, wherein: The processor includes a terminal signal power detection unit, a real signal receiving unit and a main control unit; wherein, The terminal signal power detection unit is connected to the test cable, and is used to receive the test signal output by the test cable and detect the terminal power value of the test signal; The real signal receiving unit is connected to the signal transmission cable and is used to receive the signal output by the signal transmission cable; The main control unit is respectively connected to the source signal power detection unit, the terminal signal power detection unit and the real signal receiving unit, and is used to determine the line loss value of the test cable according to the original power value and the terminal power value, and perform power compensation on the signal transmitted through the signal transmission cable based on the line loss value to obtain a compensated signal.

8. The endoscope system according to claim 7, wherein: The source-end signal power detection unit and the terminal-end signal power detection unit include the same power detection circuit and / or power detection chip.

9. The endoscope system according to claim 7, wherein: The signal to be transmitted includes an image signal, the endoscope system further includes a display device, and the main control unit is connected to the display device; The display device is used to display the image generated by the main control unit based on the compensation signal.

10. The endoscope system according to any one of claims 1 to 9, characterized in that: The real signal source includes an image sensor and / or an ultrasound probe.

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